Electrical computers and digital processing systems: interprogra – Application program interface
Reexamination Certificate
2006-01-03
2006-01-03
Follansbee, John (Department: 2154)
Electrical computers and digital processing systems: interprogra
Application program interface
C712S228000, C718S107000
Reexamination Certificate
active
06983467
ABSTRACT:
An application programming interface (API) enables application programs in a multitasking operating environment to classify portions of their code and data in a group that the operating system loads into physical memory all at one time. Designed for operating systems that implement virtual memory, this API enables memory-intensive application programs to avoid performance degradation due to swapping of units of memory back and forth between the hard drive and physical memory. Instead of incurring the latency of a page fault whenever the application attempts to access code or data in the group that is not located in physical memory, the API makes sure that all of the code or data in a group is loaded into physical memory at one time. This increases the latency of the initial load operation, but reduces performance degradation for subsequent memory accesses to code or data in the group.
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Eisler Craig G.
Engstrom G. Eric
Follansbee John
Klarquist & Sparkman, LLP
Microsoft Corporation
Patel Haresh
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